What are mothers rights ?

[sherlock23]

Workplace, a supermarket that is suppose to be family friendly, are trying to bring in changes to my contract that I am unable to do due to having a 2 year old daughter. Other colleagues are being "shown the door " for not matching required hours by as little of 30 mins difference in what company require. What are my rights or do I just have to lose my job ? Some colleagues who have no contraints on their time are being given earlier finishes or no change to their contracts at all. Please help !

I'm sorry but there is not enough information in yur post to advise on.

1. What is your current contract - they cannot just change it without negotiation
2. What do they want you to do (is a change to T&Cs or are they just tightening up on rules they have previously ignored e.g have you always worked through and taken your meal break at the end of the shift allowing you to leave early and now they are saying actually the working time directive says that meal breaks cannot be taken at the beginning or end of the shift so we have to abide by the law now we have discovered what it is?).
3. Family friendly usually means they offer a range of things that are specified, e.g. longer than statutory maternity leave, or more pay than stat minimum, allowing part time hours, paid instead of unpaid special leave for arranging cover for dependent's illnesses etc. It does not usually mean allowing all parents to work what they wish. You say you cannot do what they ask because you have a 2 year old, does that mean you cannot or that you choose not to e.g you want to pick her up from nursery as opposed to employing childcare or her father adjusting his hours to pick her up etc to pick her up, (you are perfectly entitled to make such choices but it is not up to your employer to necessarily accommodate them.
4. Everyone has constraints on their time not just people with children, why are some contracts being changed and others not?

I deal with HR issues at work but can't really advise if what they are doing is lawful, uncontractual or discriminatory on the details you have given.

Parents, not mothers!! It drives me mad!